to determine the threshold of photoperiodism and culmulative thermal time related to bulbing and growth analysis of safid behbehan, ghermez iranshahr and primavera onion cultivars an experiment was conducted at behbahan agricultural research station for a year (2006-2007) based on a randomized complete block design of four replications. seeds were sown in nursery in late october and seedlings t...

saving in irrigation water is important in the early season of sugar beet. the effect of early season deficit irrigation on the sugar beet growth indexes was investigated in kabotarabad agricultural research station (esfahan) in 1998. the soil texture was silty clay and the experiment design was randomized complete block with 4 relications. six irrigation regimes were applied after. 1) 100 mm (...

The aim of the present investigation was to study the growth, yield and yield components of maize (Zea mays L.) single cross 704 under different levels of irrigation, plant density, and ethephon in southern Iran where this particular crop has not yet been studied in detail. A field experiment was performed in the 2004 5 growing season at the experimental farm of the College of Agriculture, Shir...

In order to evaluation of influence of sulphur fertilizer on grain yield and the some of physiological indices of canola, an split plot experiment based on randomized complete block design was conducted in Research Farm Islamic Azad University, Ardabil branch in 2007. Factors were: sulfur fertilizer at four levels (0 as control, 25, 50 and 75 kg S/ha) in the main plots and canola cultivars at t...

barnyardgrass has always been considered as the most important weed of rice all over the world. meanwhile, establishment of new species of this genus which is more adaptable to paddy ecosystem will increase the importance of this genus as a new threat to rice. in order to evaluate the competition of two species of barnyardgrass with rice, an experiment was conducted at rice research institute o...

Effect of seed ageing on stand establishment, growth and yield of three soybean varieties was studied. Treatments consisted of three varieties viz. Shohag, Bangladesh soybean 4 and BARIsoybean-5 with four levels of seed ageing viz. 20, 12, 8 and 2 months aged seed. Seed germination and field emergence percentage decreased but electrical conductivity of seed leachate increased with increasing se...

The experiment on “Performance of quinoa (Chenopodium Willd.) under varied sowing windows and planting patterns” was carried out at Main Research Station, Hebbal, UAS, GKVK, Bengaluru, during Kharif-2019. constituted four dates (D1: July second fortnight, D2: August first D3: fortnight D4: September fortnight) patterns (S1: 30 × 15 cm, S2: 45 S3: 60 cm S4: 75 cm) replicated thrice laid in split...

Photosynthesis occurs in mesophyll cells of specialized organs such as leaves. The rigid cell wall encapsulating photosynthetic cells controls the expansion and distribution of cells within photosynthetic tissues. The relationship between photosynthesis and plant growth is affected by leaf area. However, the underlying genetic mechanisms affecting carbon partitioning to different aspects of lea...

Concrete grinding residue (CGR) is a slurry byproduct created by concrete pavement maintenance operations. Disposal of CGR slurry is presently regulated on the basis of very minimal information. The least immediate expense is incurred by spreading CGR slurry directly on vegetated roadway ditches and embankments. The direct disposal impacts to environmental quality in terms of soil physical or c...