Drought is an important environmental constraint limiting the productivity of many crops worldwide. Experiments were conducted to investigate the effects of foliar spray of natural extract (garlic extract) on drought stress in two cultivars of soybean (Glycine max) plants. Drought stress caused significant decrease in growth parameters (shoot and root length, area of leaves, fresh and dry weigh...

The effect of exogenous application of various levels of -1 ethrel (500, 1000, 1500 and 2000 μmol l ); Gibberrelic Acid (GA 15, 30, 45 3 ; -1 -1 and 60 μmol l ) and Maleic hydrazide (MH; 200, 400, 600 and 800 μmol l ) on sex expression of bottle gourd (Lagenaria siceraria Molina) plants cv. Faisalabad Round was investigated under field conditions in National Agricultural Research Centre, Islama...

A research project was conducted to evaluate the impact of alternative citrus nitrogen and water management practices on groundwater nitrate concentrations beneath the vulnerable sandy soils in the ridge citrus region of Central Florida. Fifteen months of baseline data indicated that groundwater nitrate-nitrogen concentrations were above the Environmental Protection Agency’s Maximum Contaminant...

This study was conducted to observe the effects of exogenous gibberellic acid3 (GA3) and 6-benzylaminopurine (BAP) treatments on growth inflorescence initiation Phalaenopsis determine whether hormonal applications can substitute for low-temperature exposure floral transition. Queen Beer ‘Mantefon’ clones were treated with no hormones (control), GA3 100 mg/L, 200 BAP mg/L + by foliar spray. The ...

Abstract Abiotic stresses are the most major limitation to crop production, causing yield losses up 50%, and consider challenges for production of crops. Thus, an experiment was conducted determine how sugar beet would respond soil application K-humate rates foliar biostimulants under salt stress. Split-plot design in three replicates used both seasons, where fertigation (control, 12, 24 kg ha ...

To evaluate the physiological responses of chrysanthemum to silicon spray in non-stress conditions, this study was performed in two separate experiments (at 4 to 5 and 8 to 12-leaf stages) as a factorial randomized completely design with two factors: silicon source (in two levels: sodium silicate and calcium silicate) and the concentration of silicate at five levels (0, 50, 100, 150 and 200 mg ...

This investigation was made to examine the role of gibberellic acid (GA(3)), indole-3-acetic acid (IAA) and EDTA in improving phytoextraction of the Pb and plant growth on Pb added soil. GA(3), IAA and EDTA were applied separately and in combinations. GA(3) and IAA were applied as foliar spray and seed soaking. EDTA was applied in single and split doses. Analysis of the Pb in different parts of...

Ten cultivars of seashore paspalum, Paspalum vaginatum Swartz, were compared for their response to Japanese beetle, Popillia japonica Newman, larval root feeding. Cultivars of Bermuda grass, Cynodon sp., and zoysiagrass, Zoysia sp., also were included for comparison. Turf grown in pots in the greenhouse was infested with second and third instars in this 2-yr study. Grub survival and weight gain...

In West and Central Africa, three foliar diseases—early leaf spot caused by Cercospora arachidicola S. Hori; late leaf spot caused by Cercosporidium personatum Berk. & M.A. Curtis (syn. Phaeoisariopsis personata (Berk. & M.A. Curtis) Arx); and rust caused by Puccinia arachidis Speg.— are major constraints to peanut production. Disease distribution and severity vary from region to region with yi...