EFFECT OF NEEM LEAF EXTRACT ADDED IN DIFFERENT METHODS IN THE PRODUCTIVITY OF TWO VARIETIES OF POTATOES

Abstract

An experiment was undertaken in spring season at Agric. Coll.-BaghdadUni., to study the effect of neem leaf extract added in different methods in thequantitative productivity of two varieties of potatoes, RCBD design with threereplication as split plot experiment was adopted, varieties (bureen and rivera)the main factor nutrient treatment (sub factor), The experiment contain 12treatments, treatment was add as cow manure (5% of soil volume) (T4),irrigation with cow manure (T4), cow manure (5% of soil volume) withrecommended treatment (T5), neem leaves extract spraying (2.5 g L-1) + cowmanure (5%) (T6), neem leaves extract spraying (5 g L-1) + cow manure (5%)(T7), neem leaves extract spraying (7.5 g L-1) + cow manure (5%) (T8), neemleaves extract irrigation (25%) + cow manure (5%) (T9), neem leaves extractirrigation (51%) + cow manure (5%) (T01), neem leaves extract irrigation (75%)+ cow manure (5%) (T11), neem leaves extract irrigation (100%) + cow manure(5%) (T9), further more recommended treatment (T2) and control (T1), alltreatment replicated three times, The Results shown that bureen varietyincreased plant height, leaf number, plant yield, plant tuber number, Plantmarketable tuber number, while rivera increase TSS, T7 increased plant height,T12 increased leaf number and tuber number, T11 increased plant yield andmarketable plant yield, T9 increase marketable tuber number, T4 increase tuberhardness and T11increase TSS, T12 increase leaf number and T9 increasedmarketable tuber number and T4 increased tuber hardness in Burren Variety,T11 increased plant yield and marketable yield and T11 increased Tuber TSS inrivera Variety.