scispace - formally typeset
Search or ask a question
Author

Allah Wadhayo Gandahi

Bio: Allah Wadhayo Gandahi is an academic researcher from Sindh Agriculture University. The author has contributed to research in topics: Sunflower & Irrigation. The author has an hindex of 6, co-authored 19 publications receiving 129 citations.

Papers
More filters
01 Jan 2011
TL;DR: Root length, fresh shoot and root weight, root dry weight including seed vigor index were maximum with increasing temperature particularly in case of variety Mehran-89, and these temperature regimes were identified as optimum for wheat seed.
Abstract: Temperature greatly influences germination of the seeds. Most of the varieties lack the ability to sustain temperature stress with significant differences for germination and related traits. Laboratory investigations were conducted to determine the effect of different temperature regimes on germination traits of various wheat (Triticum aestivum) varieties at Department of Agronomy, Sindh Agriculture University, Tandojam, Pakistan during 2008. Seeds of five wheat varieties (Moomal 2000, T J-83, Imdad-2005, Abadgar-93 and Mehran-89) were tested for germination and related traits under three temperature regimes (10, 20 and 30 o C) in germinator. The increase in temperature significantly enhanced germination and related traits. All the wheat varieties germinated well (80-97%) sown at 10-30 o C, whereas, shoot length was maximum in Moomal-2000 and Mehran-89 sown at 20 and 30 o C, respectively. Root length, fresh shoot and root weight, root dry weight including seed vigor index were maximum with increasing temperature particularly in case of variety Mehran-89. The maximum seed germination, vigor index occurred at 20-30 o C and these temperature regimes were identified as optimum for wheat seed

53 citations

01 Jan 2011
TL;DR: In this paper, the effect of different seed rates (125, 150, 175 and 200 kg ha -1 ) on growth, yield and nutrient uptake of wheat varieties (TD -1, TJ-83 and Mehran-89) was evaluated.
Abstract: Optimum seeding rate is one of the most important production factors for higher grain yield as well as for quality crop. Indiscriminate use of seeding rates not only increases production costs but usually decrease wheat grain yield. Field trials were conducted at Sindh Agriculture University Tandojam, Pakistan during 2007-08 to evaluate the effect of different seed rates (125, 150, 175 and 200 kg ha -1 ) on growth, yield and nutrient uptake of wheat varieties (TD -1 , TJ-83 and Mehran-89). Seed rates significantly affected all the plant traits. Crop sown at low seed rate of 125 kg ha -1 had better growth, yield, nutrient uptake and low lodging tendency. Maximum tillers, spike length, grains spike -1 , grain weight spike -1 , seed index, biological yield, grain yield, harvest index, dry matter, crop growth rate and low lodging were found in TD -1 sown at 125 kg ha -1 seed rate. However, higher seed rates (200 kg ha -1 ) resulted in delayed maturity, greater internode length and higher lodging in Mehran-89. However, TJ-83 was inefficient and recorded minimum values of all the growth, yield, nutrient uptake and traits. It was concluded that wheat variety TD -1 could be sown at optimum seed rate of 125 -1 50 kg ha -1 for better growth, yield, nutrient uptake

32 citations

Journal ArticleDOI
TL;DR: In this paper, a field experiment was conducted to study the residual effect of integrated nutrient management on growth and yield of chickpea crop and it was concluded that the application of half of recommended dose of NKP (18-36-10 kg ha-1) in combination with poultry manure orfarmyard manure at the rate of 20 t Ha-1 was the best combination for higher chickpeaa crop yields.
Abstract: The chickpea is a major legume crop of Pakistan cultivated under rice-chickpea cropping system. Integrated nutrient management is important for higher crop yields and sustainable agriculture. A field experiment was conducted to study the residual effect of integrated nutrient management on growth and yield of chickpea crop. The treatments included control (no organic or inorganic fertilizer), NPK (36-72-0 kg ha-1), NPK (36-72-20 kg ha-1), Farmyard Manure (20 t ha-1), Poultry Manure (20 t ha-1), NPK (18-36-10 kg ha-1) + FYM (20 t ha-1), NPK (18-36-10 kg ha-1) + P.M (20 t ha-1), NPK (36-72-20 kg ha-1) + FYM (20 t ha-1), NPK (36-72-20 kg ha-1) + P.M (20 t ha-1), NPK (18-36-10 kg ha-1) + FYM (10 t ha-1), and NPK (18-36-10 kg ha-1) + P.M (10 t ha-1). All the relevant agronomic observations and chemical analysis of the soil and plant samples were recorded. The application of organic sources of farmyard manure and poultry manure in combination with inorganic NPK fertilizers had shown positive effect on chickpea plant height, number of branches plant-1 , number of pods plant-1 and seed index. The growth and yield of chickpea significantly increased with the collective application of chemical fertilizers and organic manures. It is concluded that the application of half of recommended dose of NKP (18-36-10 kg ha-1) in combination with poultry manure or farmyard manure at the rate of 20 t ha-1 was found best combination for higher chickpea crop yields in compare to other levels of fertilizers.

23 citations

Journal ArticleDOI
TL;DR: In this article, the effect of three sowing dates 25 th October, 10 th November and 25 th November on three hybrid maize varieties Pioneer 1543, Syngenta 4841 and Monsanto DK-6142 was studied.
Abstract: This study was conducted during 2013-14 at Student Farm, Department of Agronomy, Faculty of Crop Production, Sindh Agriculture University, Tandojam. The experiment was laid out in Randomized Complete Block Design (factorial) with three replications having net plot size 3x4m=(12m 2 ). The effect of three sowing dates 25 th October, 10 th November and 25 th November on three hybrid maize varieties Pioneer 1543, Syngenta 4841 and Monsanto DK-6142 was studied. Yield components and grain quality parameters such as plant height, number of cobs per plant, cob length, grains per cob, grain yield, protein, starch and oil content of maize varieties were significantly affected by different sowing dates. It was concluded from the finding of present research work that all quantity and quality traits were promising when the sowing was completed up to 25 th October. Further delay of the sowing had negative effects on the performance of quantity and quality of maize. Hybrid maize variety Pioneer 1543 was promising variety which gave the grain yield more than 8312 kg ha -1 .

12 citations

Journal ArticleDOI
TL;DR: In this paper, a study was conducted at Drainage and Reclamation Institute of Pakistan (DRIP), Tandojam in a clay loam soil, which showed that there was highly significant difference in volume of water applied, yield and water productivity of wheat crop under the raised-bed and conventional irrigation systems.
Abstract: A study was conducted at Drainage and Reclamation Institute of Pakistan (DRIP), Tandojam in a clay loam soil. The treatments include raised-bed irrigation system (T 1 ) and conventional irrigation system (T 2 ). The experiment was laid down using randomized complete block design (RCBD) with three replications. The total area under experiment for each treatment and replication was 1004.65 m 2 and 334.88 m 2 respectively. Groundwater quality of experimental sight was slightly saline. Results of the experiment showed that there was highly significant difference in volume of water applied, yield and water productivity of wheat crop under the raised-bed and conventional irrigation systems. Both water saving (50.73%) and water productivity (54.37%) of wheat crop was higher under raised-bed irrigation system. The raised-bed irrigation system obtained 24.65% higher yield compared to conventional irrigation system. All other parameters were also higher under the raised-bed irrigation system. Thus raised-bed irrigation system is recommended to achieve higher yield and water productivity of wheat crop and to save water particularly in a clay loam soil.

10 citations


Cited by
More filters
Book ChapterDOI
13 Mar 2013
TL;DR: In this article, the difficulty of climate change is further added considering its precisely projecting potential agricultural impacts, and it was mentioned that the decade from 2000 to 2009 was the warmest ever recorded.
Abstract: Temperature stress is becoming the major concern for plant scientists worldwide due to the changing climate. The difficulty of climate change is further added considering its precisely projecting potential agricultural impacts [1, 2]. Temperature stress has devastating effects on plant growth and metabolism, as these processes have optimum temperature limits in every plant species. Global climate change is making high temperature (HT) a critical factor for plant growth and productivity; HT is now considered to be one of the major abiotic stresses for restricting crop production [3]. The US Environmental Protection Agency (EPA) indicates that global temperatures have risen during the last 30 years [4], and it was mentioned that the decade from 2000 to 2009 was the warmest ever recorded.

177 citations

Journal ArticleDOI
TL;DR: The progressive tailoring of the heat-tolerant genotypes demands a rational integration of molecular breeding, functional genomics and transgenic technologies reinforced with the next-generation phenomics facilities.
Abstract: Increasing severity of high temperature worldwide presents an alarming threat to the humankind. As evident by massive yield losses in various food crops, the escalating adverse impacts of heat stress (HS) are putting the global food as well as nutritional security at great risk. Intrinsically, plants respond to high temperature stress by triggering a cascade of events and adapt by switching on numerous stress-responsive genes. However, the complex and poorly understood mechanism of heat tolerance (HT), limited access to the precise phenotyping techniques, and above all, the substantial G × E effects offer major bottlenecks to the progress of breeding for improving HT. Therefore, focus should be given to assess the crop diversity, and targeting the adaptive/morpho-physiological traits while making selections. Equally important is the rapid and precise introgression of the HT-related gene(s)/QTLs to the heat-susceptible cultivars to recover the genotypes with enhanced HT. Therefore, the progressive tailoring of the heat-tolerant genotypes demands a rational integration of molecular breeding, functional genomics and transgenic technologies reinforced with the next-generation phenomics facilities.

145 citations

Journal ArticleDOI
TL;DR: This review provides the first up-to-date perspective and detailed analysis of wheat research in Bangladesh and the impact that global warming will have on its agriculture, especially wheat farming.
Abstract: Background and aims The most fundamental activity of the people of Bangladesh is agriculture. Modelling projections for Bangladesh indicate that warmer temperatures linked to climate change will severely reduce the growth of various winter crops (wheat, boro rice, potato and winter vegetables) in the north and central parts. In summer, crops in south-eastern parts of the country are at risk from increased flooding as sea levels increase. Key facts Wheat is one of the most important winter crops and is temperature sensitive and the second most important grain crop after rice. In this review, we provide an up-to-date and detailed account of wheat research of Bangladesh and the impact that global warming may have on agriculture, especially wheat production. Although flooding is not of major importance or consequence to the wheat crop at present, some perspectives are provided on this stress since wheat is flood sensitive and the incidence of flooding is likely to increase. Projections This information and projections will allow wheat breeders to devise new breeding programmes to attempt to mitigate future global warming. We discuss what this implies for food security in the broader context of South Asia.

82 citations

Journal ArticleDOI
TL;DR: Four barley and two wheat genotypes were evaluated in south-eastern Russia to identify heat- and drought-tolerant genotypes for future breeding programmes by identifying suitable sowing times for specific genotypes.

79 citations