Response of Watermelon Pulp to Intercropping With Some Summer Oil Crops Under Different Sowing Dates
Keywords:Sunflower, soybean, sesame, Land Equivalent Ratio, Economic evaluation
A field trial was carried out at Gemmiza Agricultural Research Station, A.R.C, Egypt during 2019 and 2020 seasons to obtain the advantage of intercropping oil crops (sunflower, soybean and sesame) and its suitable sowing date (15 days before sowing watermelon pulp [D1], sowing both crops simultaneously [D2] and 15 days after sowing watermelon pulp [D3]) for intercropping with
watermelon pulp to increase land equivalent ratio and farmer's income. Oil crops allocated to the main plots and sowing dates arranged in the sub-plots in split-plot design with three replications. Results indicated clearly that no. of seeds fruit-1, seed weight fruit-1, 100-seed weight, seed weight plant-1 and seed yield fed-1 of watermelon pulp affected significantly by interaction between the type of associated oil crop and its sowing date. Results also indicated clearly that all traits of oil crops affected significantly by sowing dates except plant height trait for all oil crops in both seasons. The highest seed yield values for oil crops associated with watermelon pulp were recorded when sowing any of oil crops 15 days before planting watermelon pulp in both seasons. The highest values of LER (1.26 and 1.26) were recorded when sowing soybean simultaneously with planting watermelon pulp, whereas, highest values of gross income of the farmer (31,282 and 30,158 LE) were recorded when sowing soybean after 15 days from planting watermelon pulp in first and second seasons, respectively. This intercropping technique adds an additive income of 1,982 and 1,808 LE to gross income of the watermelon pulp farmers. It could be recommended that soybean should be planted 15 days after watermelon pulp planting to obtain the highest farmer’s gross income.
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