A palma tem grande importância para a pecuaria da regiao semiarida do Brasil. Essa planta vem apresentando elevada produtividade de forragem, influenciada por varios fatores de manejo. Objetivou-se avaliar o efeito de doses de adubacao orgânica (20, 40 e 80 t/ha de esterco bovino/ha/dois anos) e densidades de plantio (20, 40, 80 e 160 mil plantas/ha) sobre a produtividade da palma forrageira Clone IPA-20 (Opuntia ficus indica Mill). O experimento foi conduzido na Estacao Experimental de Caruaru, pertencente ao Instituto Agronomico de Pernambuco - IPA. O delineamento experimental foi em blocos casualizados, com arranjo de parcelas subdivididas. Verificou-se maior produtividade de parte aerea com o aumento da densidade populacional e aplicacao de 80 t de esterco/ha/dois anos, com valores de 61; 90; 117 e 139 t MS/ha/dois anos, nas densidades de 20, 40, 80 e 160.000 plantas/ha. A produtividade do cladodio-planta e peso seco da raiz foram influenciados pela densidade de plantio, apresentando respostas exponenciais, tendendo a apresentar maior peso do cladodio planta e raizes por area com a elevacao da densidade de plantio. A eficiencia da adubacao orgânica diminuiu com a elevacao das doses de esterco. Recomenda-se para plantios com 160.000 plantas/ha aplicacao de, no minimo, 40 t de esterco bovino/ha/dois anos para incremento na produtividade da palma.

https://periodicos.ufersa.edu.br/index.php/caatinga/article/download/3869/pdf

Produtividade e eficiência da adubação orgânica da palma forrageira sob diferentes densidades de plantio

The goal of enhancing human well-being and dignity for the communities surrounding Podocarpus National Park (PNP) is inexorably connected to the goal of protecting ecosystem health and integrity in the southern Andes. While these goals are often viewed as conflicting, one area where they clearly overlap is in agroforestry practices. Agroforestry has the potential to improve food security and economic production while also enhancing forest cover, soil conservation, watershed protection, and habitat quality. A variety of traditional, indigenous, and modern agroforestry practices are available as a foundation for effective sustainability and conservation efforts around PNP. However, the trend of land-use extensification—with large areas dedicated to marginal production of beef and dairy cattle, as well as corn and coffee—continues to lead to new deforestation. Reversing the trend of extensification will require improved technical and resource capacity for agroforestry and reforestation in the region, which c...

Agroforestry Systems and Podocarpus National Park, Ecuador: Current Status and Recommendations for Future Work

Cactus: the new green revolution in drylands

-E * field experiment was conducted during 2018 and 2019 seasons on El-shamia cactus pear plants orchard about eight years old, grown in sandy soil under drip irrigation system from a well located in Abu Ghaleb area, "Cairo-Alexandria desert road" about 50 km from Cairo, Egypt. The aim of study was the evaluation of the effect of cattle manure soil application rates; i.e. 20, 30 and 40 kg/plant and humic acid at 3 rates; i.e. 0, 10 and 20 g/plant as well as their interactions on growth, cladodes nutrients content, yield and fruit quality and investment ratio of cactus pear plants. Resulted showed that increasing cattle manure rates induced a progressive enhancement of the growth, cladodes nutrients content, yield and fruit quality. Moreover, humic acid at 20 g/plant surpassed the other two tested rates in enhancing the previously mentioned studied traits. Furthermore, cattle manure and humic acid as well as their combinations had positive effects on net profit and investment ratio. Finally, it is preferable to apply cattle manure at 40 kg/plant combined with humic acid at 20 g/plant to enhance growth, yield and fruit quality as well as cladodes nutrients content of El-shamia cactus pear. Besides, cattle manure at 30 kg/plant combined with humic acid at 20 g/plant attained the highest value of total revenue per feddan, net profit per feddan and investment ratio. The effects of cattle manure and humic acid as well as their combinations were cumulative and the second season was better than the first season in productivity and net profit as well as investment ratio.

Effect of organic manure and humic acid on productivity and fruit quality of cactus pear

A live fences project in Ecuador sought to associate the idea of environmental recovery, characterized by an agro-ecological focus, with a perspective on social and economic development. Cultivation of the Opuntia cactus and the cochineal insect (Dactylopus coccus), environmentally and culturally adapted to the region, permitted the recovery of several degraded areas and generated income for rural dwellers, especially during periods of drought. Among the most important project impacts were: recovery of traditional knowledge, cultural values, ancestral skills, and inveterate attachment to communal properties; determination of the ecotones of the cactus for production of cochineal, fruits, forage, and live barriers; recovery of areas eroded by overexploitation and inadequate management; increased sensitivity among political leaders regarding the problems of desertification and the need to support a second phase of the project; decision-making by community-based organizations; and commitment of the ...

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Fernando Casas-Castañeda

Papers

Use of Live Fences of Nopal (Opuntia) and Associated Crops to Rehabilitate and Protect Sloping Land in Loja, Ecuador