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• Effect of nitrogen on growth and yield of chili (Capsicum annuum var. ‘Marshal’) in Chitwan, Nepal

  95-100.

  Akash Thapa Tamang

  Ranjan Bhattarai

  Mukesh Pant

  Basanta Kumar Rimal

  Pradeep Raj Rokaya

  Views:

  424

  A field experiment was conducted from April to July 2024 in Rampur, Chitwan, to evaluate the performance of different levels of nitrogen on the growth and yield attributes of chili. The Marshal variety of chili was tested under five different nitrogen doses (0, 30, 60, 90, and 120 kg/ha). The treatments were arranged in a one-factorial Randomized Complete Block Design (RCBD) with four replications. Observations were for different growth and yield parameters, and data were analyzed using R-studio. The results revealed that all growth and yield characters of chili were significantly influenced by nitrogen levels. The plants treated with 120 kg/ha nitrogen produced the maximum height (45.6 cm), canopy (604.5 cm²), primary branch (8.67), leaf number (9.78), fruit length (6.26 cm), and fruit weight per plot (111.04 g). The 90 kg/ha nitrogen ranked second, with plant height of 43.12 cm, canopy cover 570.70 cm², primary branch 7.30, leaf number 9.23, fruit length 5.87 cm, and fruit weight per plot 103.63 g. All parameters were significantly reduced in the control, where no nitrogen was applied. The highest yield was obtained in T₅ (3.07 t/ha) followed by T₄ (2.98 t/ha), T₃ (2.67 t/ha), and T₂ (2.32 t/ha). The findings of this study demonstrated that 120 kg/ha nitrogen level resulted in the highest values for all measured traits and was significantly greater than that of all other nitrogen levels. Therefore, it is concluded that nitrogen dose of 120 kg/ha is the most economical for achieving better growth and fruit yield in chili (variety ‘Marshal’).

• Microclimatic studies on different aged apple plantations

  7-11.

  L. Lakatos

  I. Gonda

  Z. Szabó

  S. Zhongfu

  Y. Wang

  J. Nyéki

  Views:

  748

  The purpose of measuring parallel canopy and out of canopy microclimates was to find out in what extent climatic parameters measured in different aged canopis differ from each other and from the values characteristic to out-of-canopi areas. The importance of phytoclimatic researches seems to lie in the fact that if the reactions of fruit trees towards meteorological elements are continuously followed, we have the possibility to provide growers with information. These pieces of information are like defining the optimum time of phitotechnical interventions (summer pruning, sorting sprouts, thinning fruits, etc.), the necessity of applying mulching, defining the method and time of irrigation and applying plant protection activities. By means of phytoclimatic researches, it is possible to react to unfavourable meteorological impacts within a certain extent. It is also possible to successfully reduce the risks of late spring and early autumn frost damage, as well as the risks, content and measure of experienced heat and water stress conditions by finding out about the physical characteristics of the canopis' internal area.

• Pilot study for irrigation modelling of a pear plantation

  81-84.

  J. Tamás

  T. Fórián

  A. Nagy

  J. Nyéki

  M. Soltész

  Z. Szabó

  Views:

  1343

  Our investigation was carried out in the area of Fruit growing Research and Consultant non-profit company, at Újfehértó. The pear requires large water quantity, but this pear plantation hasn’t irrigation system not yet. This study reviews the drainage conditions of the area based on digital elevation model, and examined the canopy cover of pear trees by evaluating of the hyperspectral image. Our aims were to determine the exact watershed based irrigation modelling and determining of the canopy% of the pear orchard to facilitate a precision irrigation decision support system.

• Relaco: a product to reduce water shoot formation around pruning wounds in pome fruit trees

  30-31.

  L. Csiszár

  M. Újvári

  T. Panea

  Views:

  172

  Larger cuts made during the winter pruning of pome fruit orchards a number of serious problems: the wounds serve as entrances for several branch-infecting pathogens, the numerous water shoots formed around the cut edges consume assimilates, shade the developing fruits, make the canopy dense, reduce the effectiveness of the pest management and cause extra work during next seasons pruning work. These problems can be eliminated by using proper wound protectants, like Relaco, a new Romanian wound protectant to cover larger pruning cuts of apple, pear and quince trees.

  The treaments by Relaco resulted in a significant decrease in both the number and total length of water shoots formed around the cut egdes.