Global Journal of Science Frontier Research, D: Agriculture and Veterinary, Volume 23 Issue 1

Colorimetric method (Datta, et al., 1962). Total nitrogen was analyzed by Kjeldahl’s method as discussed by Piper (1950). The available P 2 O 5 and K 2 O were determined by Olsen’s method (Olsen et al ., 1954) and Flam photometric method (Singh, 1971), respectively. The treatments i.e., guava + groundnut cv. Dh-86 + soil application of neem leaves powder @ 50 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha, guava + groundnut cv. Dh-86 + soil application of neem leaves powder @ 100 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha, guava + groundnut cv. ICGV-93468 + soil application of neem leaves powder @ 50 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha and guava + groundnut cv. ICGV-93468 + soil application of neem leaves powder @ 100 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha were tested. The fields of guava with two to four years old plantation were selected for sowing of groundnut as a summer filler crops. The farmers were advised for the plantation of guava at spacing of 6 x 6 m 2 . Two cultivars of groundnut viz., Dh-86 and ICGV-93468 were selected for filler cropping. The groundnut was planted from 5-10 March during the three experimental years. The 20 rows of groundnut were planted between two rows of guava. The sowing of groundnut was done at spacing of 25 cm. The gap of 50 cm was maintained between the adjacent guava and groundnut rows from both sides to facilitate easy intercultural operations. The recommended package of practices was followed for raising of both crops. The groundnut was harvested at 90-95 days after planting in 3 to 8 June of three years. Both crops were irrigated as and when required. III. R esults and D iscussion The pooled data of fruits yield of guava, pods yield of summer groundnut, system productivity and incidence of insects, pest and diseases have been presented in Table-1 and discussed here under appropriate heads. a) Fruits yield of guava Perusal of data make it clear that guava + groundnut cv. ICGV-93468 + soil application of neem leaves powder @ 100 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha treatment gave higher fruits yield of guava by 79.00 q/ha (T 4 ), closely followed by guava + groundnut cv. ICGV-93468 + soil application of neem leaves powder @ 50 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha (77.00 q/ha) in comparison to T 1 (74.00 q/ha) and T 2 (76.00 q/ha). These results confirm the findings of Singh (2009) and Singh (2011). b) Pods yield of summer groundnut It is clear from the results that not much variation was found under different treatments, though numerically higher pods yield of cultivar ICGV-93468 was weighed under treatment of guava + groundnut cv. ICGV-93468 + soil application of neem leaves powder @ 100 kg/ha and spraying of neem oil on guava plants @ 2.5 lit/ha by 31.00 q/ha as compared to other tested treatments. The performance of pods yield of groundnut was T 4 (31.00 q/ha) > T 2 (30.30 q/ha) > T 1 (25.00 q/ha) and > T 3 (24.00 q/ha). These results are in agreement with those reported by Singh (2009) and Singh (2011). c) System productivity The system productivity was computed from the total production of fruits yield of guava and pods yield of summer groundnut. The highest total productivity was found under guava + groundnut cv. ICGV-93468 + soil application neem leaves powder @ 100 kg/ha and spraying of neem oil on guava plants @ 2.5 lit./ha by 110.00 q/ha, closely followed by guava + groundnut cv. Dh-86 + soil application neem leaves powder @ 100 kg/ha and spraying of neem oil on guava plants @ 2.5 lit./ha by 106.30 q/ha. The two treatments i.e., T 1 and T 3 displayed the system productivity as 99.00 q/ha and 101.00 q/ha, which was lowest. The higher and lowest yield of guava fruits and pods yield of summer groundnut under tested treatments were responsible for highest and lowest system productivity. Similar results have also been reported by Singh (2009) and Singh (2011). d) Biotic Control i. Incidence of insects, pest and diseases For the control of white grubs, termites and pod borers, soil application of neem leaves powder was made before the sowing of groundnut. The lower and higher doses of neem leaves @ 50 kg/ha and 100 kg/ha, respectively, fully control the incidence of white grubs and BND disease in groundnut. The 1% incidence of termites was counted under lower dose of 50 kg/ha neem leaves powder, while it was fully control at higher dose of 100 kg/ha neem leaves powder. The pods damage by pod borers was recorded between 1% to 2% under lower and higher doses of neem leaves powder. For the control of white grubs in groundnut, the prophylactic control measure was also adopted by the spraying of neem oil @ 2.5 lit/ha on guava plantation. These plant protection measures displayed the significant achievement in control of insects, pest and diseases in groundnut and guava under agro-forestry system. ii. Abiotic control It is well known fact that the riverine soils of Uttar Pradesh have more percentage of sand in texture with crumby structure which support to the wind soil erosion. The considerable soil moisture also loss due to high wind velocity during summer season. Being cover crop, groundnut, grown as filler crop, between rows of guava control. The wind erosion of soil and checked the © 2023 Global Journals 1 Year 2023 2 Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( ) Guava ( Psidium Guajava )+Summer Groundnut ( Arachis Hypogea ) for Control of Biotic and Abiotic Harmful Factors D