author(s)
Aparna Sontakke, Mastan Vali, KN Jawanjal and Ajith Kumar Bugada

abstract
The present studies were undertaken at Agronomy farm, College of Agriculture, Dapoli during rabi 2018-19 to evaluate the effect of different fertilizer levels and various mulches on sucking pests infesting okra in the rabi- summer. Results on effect of different levels of fertigation on population of aphids during 4^th, 6^th, 7^th and 8^th WAS was minimum (4.06, 11.36, 22.27 and 10.61 respectively) in treatments F₂, F₃, F₁, F₄, respectively. During 5^th WAS whitefly population was minimum (0.53) in the treatments F₃ and F₄. During 7^th WAS whitefly population lowest (0.57) in the treatment F₂. Whereas, effect of different mulches on population of aphids infesting okra during 4^th, 7^th, 8^th and 10^th WAS was minimum (2.94, 17.77, 8.79 and 0.53 respectively) in the treatment M₃. During 5^th and 9^th WAS population of aphids was minimum (3.33 and 0.53 respectively) in the treatment M₄. The data on effect of different mulches on jassid revealed that during 3^rd, 4^th, 5^th, 6^th, 7^th, 8^th, 9^th and 10^th WAS the minimum (0.90, 0.87, 2.12, 3.33, 2.66, 3.58, 2.78 and 2.77 respectively) jassid population was recorded in treatment M₃. During 4^th, 6^th and 9^th WAS the minimum number of whiteflies were recorded in the treatment M₃ (0.54, 0.50 and 0.52 respectively). While, the combination effect of fertigation and mulches on aphids during 3^rd, 4^th, 5^th and 8^th WAS was lowest (0.52, 2.54, 2.40, 14.82 and 6.15 respectively) in the treatment combinations F₁M₂, F₂M_3, F₂M₄, F₄M₃ and F₃M₃ respectively. Interaction effect of fertigation and mulching on jassids during 3^rd, 4^th, 5^th, 6^th, 7^th, 8^th, 9^th, 10^th WAS was minimum (0.84, 0.83, 1.89, 2.75, 2.33, 2.85, 0.98 and 2.14 respectively) in the treatment combinations F₃M₃, F₁M₃, F₂M₄, F₂M₃, F₁M₃, F₁M₃, F₄M₃ and F₃M₄ respectively. During 6^th WAS the treatment combinations F₁M₃, F₂M₃, F₃M₃ and F₄M₃ recorded minimum whiteflies.