Topic
Sowing
About: Sowing is a research topic. Over the lifetime, 33888 publications have been published within this topic receiving 273438 citations. The topic is also known as: seeding.
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TL;DR: Results indicate that the accumulation of dry matter and N at early growth stages is an important factor in attaining high yields in soybean.
71 citations
TL;DR: The seasonal patterns of nodulation, acetylene reduction, nitrogen uptake and nitrogen fixation were studies for 11 pigeonpea cultivars belonging to different maturity groups grown on an Alfisol at ICRISAT Center, Patancheru, India.
Abstract: The seasonal patterns of nodulation, acetylene reduction, nitrogen uptake and nitrogen fixation were studies for 11 pigeonpea cultivars belonging to different maturity groups grown on an Alfisol at ICRISAT Center, Patancheru, India. In all cultivars the nodule number and mass increased to a maximum around 60–80 days after sowing and then declined. The nodule number and mass of medium- and late-maturing cultivars was greater than that of early-maturing cultivars. The nitrogenase activity per plant increased to 60 days after sowing and declined thereafter, with little activity at 100 days when the crop was flowering. At later stages of plant growth nodules formed down to 90 cm below the soil surface but those at greater depth appeared less active than those near the surface.
71 citations
TL;DR: 3D individual-based model FlorSys predicting growth and development of annual weeds and crops as a function of daily weather and cropping practices showed FlorSys to predict realistic potential crop yields, and the simulated impact of crop scenarios was consistent with literature reports.
71 citations
TL;DR: A grid planting pattern provided no consistent benefit but planting rye at higher seeding rates maximizes early season rye DM production and minimizes weed growth.
Abstract: Weed growth in winter cover crops in warm climates may contribute to weed management costs in subsequent crops. A 2-yr experiment was conducted on an organic vegetable farm in Salinas, California, to determine the impact of seeding rate and planting arrangement on rye (Secale cereale L. 'Merced') cover crop growth and weed suppression. Each year, rye was planted in October at three rates (90, 180, and 270 kg ha -1 ) and two planting arrangements (one-way versus grid pattern). Averaged across years, rye population densities were 322, 572, and 857 plants m -2 at the 90, 180, and 270 kg ha -1 seeding rates, respectively. Early season rye ground cover increased with seeding rate and was higher in the grid than one-way arrangement in Year 1; however, rye ground cover was not affected by rate and was higher in the one-way arrangement in Year 2. Aboveground dry matter (DM) of rye increased with seeding rate at the first two harvests but not at the final one. Planting arrangement did not affect rye aboveground DM in Year 1, but rye DM was higher in the grid pattern at the first and final harvests in Year 2. Weed emergence was not affected by seeding rate or planting arrangement. Weed biomass decreased with increased seeding rate and was also lower in the grid than in the one-way arrangement in Year 2. A grid planting pattern provided no consistent benefit but planting rye at higher seeding rates maximizes early season rye DM production and minimizes weed growth.
70 citations