Various growth regulators have been used to improve the quality of different fruit crops. Foliar spray of macro and micronutrients play an important role in vegetative growth, yield and fruit quality. In the present study, the influence of foliar application of growth regulators and nutrients on fruit splitting and fruit quality was evaluated. For that purpose, Naphthaleneacetic acid (NAA), Potassium nitrate (KNO3) and Boric acid (H3BO3) at the rate of 40 ppm, 1% and 0.3% were used respectively. Spray of chemicals were applied in 2nd and 8th week from full bloom to yield in pomegranate cultivar ‘Golden pearl’. The experiment was designed under Randomized Complete Block Design (RCBD) comprised with seven treatments and replicated thrice. Fruit splitting was reduced (48.68%) significantly with application of KNO3 + Boric acid, while maximum fruit size (60.26 cm2), fruit weight (84gm), fruit grain weight (136.38gm), total soluble solid (TSS) 12.52% and yield (21.9kg/plant) were observed in KNO3 + Boric acid. Moreover, peel weight was increased in control (60.66 gm) and minimum was observed in 48.62 gm in KNO3 + Boric acid. Finally, it is concluded KNO3 %+ Boric acid reveled best results against fruit splitting % and other fruit quality parameters. These findings show that application of KNO3+ Boric acid significantly influences fruit quality of pomegranate when fruit are in the beginning stages of growth and development.
Plants require a balanced nutrition program formulated to provide specific needs for maintenance and for expected production performance. Hence this experiment was conducted to evaluate the optimum level of phosphorus and potassium for growth and productivity of young Kinnow (Citrus reticulata Blanco) plants. The experiment was designed under Randomized Complete Block Design (RCBD) comprised with seven treatments and replicated thrice. The treatments included, T1= 200 g P2O5 + 200 g K2O, T2= 150 g P2O5 + 200 g K2O, T3= 250 g P2O5 + 200 g K2O, T4= 300 g P2O5 + 200 g K2O, T5= 250 g P2O5 + 150 g K2O, T6= 200 g P2O5 + 250 g K2O and T7= 200 g P2O5 + 300 g K2O. Maximum plant height (3.12 m) and Juice (43.48%) was observed in T5= 250 g P2O5 + 150 g K2O. The highest number of flush (33.08), number of leaves (101.25 m2), length of flush (13.75 cm), Seed weight (1.33 g), Aborted seeds/fruit (8), mature seed fruit (5.48) were noted in T7. Leaf area index and peel thickness were significantly increased in T6= (200 g P2O5 + 250 g K2O) with values 1.91 cm3 and 4.30 mm respectively. So, it is concluded that T5= 250 g P2O5 + 150 g K2O and T7= 200 g P2O5 + 300 g K2O is the best treatments for the growth and better yield of young Kinnow plants.
A pot culture experiment was conducted to study the influence of NH 4 Cl (AnalaR grade or commercial fertilizer) on soil pH and on the growth, yield and nutrient uptake of cotton (cv. NIAB-Karishma) grown in alkaline soil. The experiment was carried out in a net-house under natural conditions. The soil used was clayey loam with pH 8.61, and ammonium chloride either from commercial fertilizer or of AnalaR grade (both containing up to 25% N) was applied in three split doses, after germination (10 days), at the vegetative stage (40 days) and at the flowering stage (80 days) @ 6, 12 and 18 kg ha −1 . The application of NH 4 Cl decreased the soil pH and increased the plant height and cotton yield plant −1 . Plants treated with NH 4 Cl AnalaR grade produced higher yields as compared to NH 4 Cl commercial fertilizer. The uptake of micronutrients such as Fe, Cu, Zn and B was enhanced by NH 4 Cl application in both the stem and leaves of cotton. However, AnalaR grade NH 4 Cl proved more effective than NH 4 Cl commercial fertilizer in all cases.
Cauliflower is cultivated all around the world for its high nutritional value. In Pakistan, there is dire need to optimize the nutritional supplementation of cauliflower. Therefore, a field experiment was carried out to see the impact of NPK and sulphur on growth, yield and chlorophyll contents of cauliflower. The experiment was laid out according to Randomized Complete Block Design having ten treatments replicated thrice. The experiment was consisted of five levels of NPK (13:17:17, 15:18:18, 16:18:18, 16:19:19 and 20:20:20) in combination with two sulphur levels (20g, 40g) and a control treatment (NPK 0:0:0) without sulphur having three replications. The results revealed that highest values of observed attributes i.e plant height (54.06 cm), numbers of leaves per plant (19.93), leaf area (10.93 cm2), foliage fresh weight (36.4 g), foliage dry weight (18.48 g), curd size (10.93 cm) and curd weight (839.84 g) were observed in (16:19:19) NPK in combination with 40 gplant-1 sulphur. While, minimum values were noted in control treatment. However, minimum days to curd formation (51.53) was observed in NPK (16:19:19) in combination with the sulphur (40 gplant-1). Chlorophyll contents (1.98 CCi), total soluble solids (13.13 oBrix) and vitamin C (56.81 mg100 g-1) were maximum in the treatment (16:19:19) NPK along with 40 gplant-1 sulphur. From this study, it is concluded that treatment (NPK 16:19:19 + Sulphur 40 g/plant) is the best optimal dose for the higher growth and production of cauliflower.
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