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The present study was conducted during 2013-14 to study the economics of different mulching materials viz., black polythene, white polythene, paddy straw, saw dust, sarkanda, dry grass and control (unmulched) on aonla under rainfed conditions of Jammu. The present investigation was carried out at Rainfed Research Sub-Station for Subtropical fruits Raya, of Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu during 2013-14. The mean annual rainfall is about 1000-1200 mm. Soil of the experimental field was sandy clay in texture, having pH: 6.50, organic carbon: 0.50 per cent, available N: 174.50 kg/ha, available P: 15.80 kg/ha and available K: 140.00 kg/ha. Twenty eight trees were selected for the study and laid out in Randomized Block Experimental Design with one tree per treatment replicated four times. Application of treatments was done during the spring season viz., 19 th February, 2013.The study revealed that the total cost of cultivation was found to be higher (Rs. 2566.60) in black polythene mulch and white polythene mulches whereas it was minimum (Rs.2478.30) in control. Net returns were also recorded maximum (Rs. 2672.84/treatment) under black polythene mulch and minimum in control (Rs. 1559.30/treatment). However, benefit cost (B: C ratio) was also found to be maximum in black polythene mulch (1:2.04) and minimum in both white polythene mulch and control (1:1.69).

The experiment was carried out during 2008 to 2009 and 2009 to 2010 with the aim to study the effect of girdling and foliar application of zinc and boron on growth, quality and leaf nutrient status of olive cv. Frontoio. The experiment was laid out in a randomized block design with seventeen treatments. Maximum shoot extension growth (8.92 cm) was observed with the spray of 0.6% ZnSO 4 in combination with 0.6% boric acid. Maximum pulp:stone ratio of 2.57 and oil content of 25.62% was recorded with the foliar application of 0.6% ZnSO 4 in combination with 0.6% boric acid and 0.6% ZnSO 4 in combination with 0.4% boric acid, respectively. The highest leaf K (1.74%), Ca (1.71%) and Mg (0.15%) contents were recorded with spray of 0.5% ZnSO 4 in combination with 0.4% boric acid, 0.5% ZnSO 4 in combination with 0.5% boric acid and 0.6% ZnSO 4 in combination with 0.6% boric acid, respectively. From this study, it is concluded that foliar application of zinc sulphate in combination with boric acid resulted in better growth, physical characteristics and oil content of olive fruits.

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Foliar application of 0.2% FeSO4 + 0.3% ZnSO4 thrice at monthly interval tended to exhibit the highest plant height and spread, number of leaves per plant, average leaf area, number of flowers, fruits, marketable fruits per plant and total yield and marketable yield per plant. These plants also took the least duration to attain the age of flowering as well as harvesting.