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ThesisItem Open Access Varietal Performance of Cowpea and Okra under Mahaneem (Ailanthus excelsa Roxb.) Based Agroforestry system in South–Western Haryana(Chaudhary Charan Singh Haryana Agricultural University hisar, 2022-09) Ranawat, Jitendra Singh; Deswal, R.P.S.The present investigation entitled “Varietal Performance of Cowpea and Okra under Mahaneem (Ailanthus excelsa Roxb.) based Agroforestry system in South–Western Haryana” was carried out at Research Farm (CCS HAU, Hisar), Bawal, Haryana in already established Mahaneem plantation (July, 2013) at four spacing viz., 10 × 20 m, 10 × 10 m, 10 × 6.5 m and 10 × 5 m, during 2020–2021 & 2021–2022. Among all the treatments, tree height and DBH of Ailanthus excelsa were significantly higher in 10 × 10 m plant spacing, whereas crown spread was highest at 10 × 20 m plant spacing in comparison to other spacings of A. excelsa. The maximum green and dry fodder yield of A. excelsa was recorded under 10 × 5 m planting spacing. The maximum biomass and carbon sequestration were found in 10 × 5 m plant spacing. In Cowpea intercropped A. excelsa based agroforestry system, the maximum plant height, number of primary branches and chlorophyll content were recorded in Pusa Dharni under sole crop, while the minimum plant height, number of primary branches and chlorophyll content were observed in Pusa Sukomal 10 x 5 m A. excelsa planting spacing. In both the experimental years, the fresh pods yield of cowpea per hectare was highest in open field condition i.e., 111.67 q/ha and 108.47 q/ha respectively, in Pusa Sukomal while the minimum pods yield was observed in Pusa Dharni under 10 x 5 m A. excelsa planting spacing. In okra intercropped A. excelsa based agroforestry system, the maximum plant height, number of primary branches and chlorophyll content were recorded in Hisar Naveen under sole crop, while the minimum plant height, number of primary branches and chlorophyll content were observed in Varsha Uphar under 10 x 5 m A. excelsa planting spacing. The fresh fruit yield of okra per hectare was highest in the open field condition at 91.41 q/ha, and 90.03 q/ha in Hisar Naveen and minimum fruit yield was observed in Varsha Uphar under 10 x 5 m A. excelsa planting spacing for both years respectively. Soil pH and EC decreased significantly under Mahaneem plant spacings as compared to sole cowpea and okra crop. A significantly increase in soil organic carbon, available nitrogen and phosphorus under Mahaneem plant spacings than sole cowpea and okra crop. On the basis of economic analysis, the higher BC ratio was recorded in cowpea var. Pusa Sukomal and okra var. Hisar Naveen under 10 x 10 m plant spacings of Alianthus excelsa which was economically more feasible over sole cropping and these varieties are recommended in Mahaneem (Alianthus excelsa) based agroforestry system in South-Western Haryana.
