EFFECIENCY OF BORON AND MAGNESIUM LEVELS ON PRODUCTIVITY OF CAULIFLOWER (BRASSICA OLERACEA L.)

1. Horticulture College, Northeast Agricultural University, No. 59 Mucai Street Harbin, Heilongjiang Province, 150030, China 2. Department of Horticulture, University of Agriculture, Faisalabad, Pakistan 3. Horticulture College, South China Agricultural University, Guangzhou, 510642, China 4. Department of Agronomy, PMAS Arid Agriculture University, Rawalpindi, Pakistan 5. Department of Agronomy, Gomal University, Dera Ismail Khan, Pakistan

fibre crops, cereals, pulses crops, oilseeds crops, vegetables, citrus and alfalfa crop (Ahmad et al., 2012). Magnesium deficit spots appear on the older leaves first and include interveinal chlorosis. As the chlorosis intensifies, purple colour spots might be seen close to the leaf borders. lack is quite common particularly on soils having light acid. Longer shelf life in the curds obtained from NPK with Ca, Mg and B treatment irrespective of the storage conditions . Magnesium and Nitrogen plays equal role in improving cauliflower yield. Curd mass can be increased and hollow stem can be decreased by applying B and M (Batal et al., 1997). Magnesium significantly improved fresh weight of foliar, height of plant, fresh weight of plant leaves and dry weight of plant leaves, whole profitable curds yield and chemical composition of leaves and curds (Ahmed et al., 2011). Keeping in mind the entire reasons, the research was done to investigate B and M efficacy on cauliflower by applying different combinations of treatment.

Materials and Methods:-
Materials for this research consisted on plants of cauliflower (cv. Shumaila) and different boron and magnesium treatments. Cauliflower seeds were purchased from local seed. All treatments levels with its 3 replications were applied at time of sowing.
Row to row distance was 70 cm and plant to plant distance was 30 cm. The net plot size was (Net plot size = 3.04 × 18.29 = 55.60 m 2 ). Direct seed sowing method was taken place on ridges. Recommended fertilizer application of Nitrogen, Phosphorus and Potash were also applied in soil for stabilization. One third of NPK was given during land preparation while remaining NPK was applied throughout the season as needed by the crop. The first irrigation was applied immediately before transplantation while subsequent irrigations were applied as per crop requirement. Hoeing and weeding were culturally practiced according to requirement. Plant protection measures were applied and followed standard recommendations. Fungicides like Dithane M-45, Radomil and insecticides like Polo, tracer and Imidacloprid were applied to control insects and disease infestation. The trial was laid out according to Randomized complete block design and triplicate with ten (10) treatments.

Statistical analysis:-
The research was executed in open field conditions according to Randomized complete block design (RCBD) having ten treatments of different levels of boron and magnesium along with control. every treatment was replicated for three times. Mean values for various treatments indicating significant differences were compared using Duncan's Multiple Range Test (DMR) at 5% probability level (Steel and Torrie, 1997). In the end graphical representation was done from statistical means.

Results and Discussion:-Plant Height (cm)
Cauliflower was put under experiment and height of plant was noted. Fig. 1 shows the comparison of average plant heights (cm) of shumaila cultivar obtained by the application of 10 different treatments. Highest plant height was observed in T 9 (Boron 25 kg/ha + Magnesium 25 kg/ha) and T 8 (Boron 15 kg/ha + Magnesium 15 kg/ha), T 7 (Boron 10 kg/ha + Magnesium 10 kg/ha) showed average results.