Performance Studies on Storage of White Onion for Good Keeping Quality Onion Varieties under Ordinary Condition

Onion is commercially cultivated and widely consumed as a vegetable and as spices in India. Post-harvest factors like curing, sorting, grading, packing, storage and transportation are, however, the main factors affecting the quality. The experiment conducted at Nashik and Karnal during Rabi seasons, revealed that at Nashik the lowest PLW (19.17 %) and total loss (29.69 %) were recorded in advance line-865 and 799, respectively, which was at par with advance lines-784, 810, 827, 885 and 857 in respect of PLW and advance lines-827, 865 and 857 regarding total loss. However, at Karnal the lowest PLW (32.24 %) and total loss (48.40 %) were recorded in advance line-793 and was at par with advance lines-784, 810, 827, 830, 832, 836 and 869 in respect of PLW and advance lines-562, 784, 810, 827, 830, 832 and 836 regarding total loss at five month after storage. It is concluded that the onion genotypes, which has recorded minimum total losses after five months of storage, can be utilized for developing a good keeping quality onion variety for the different agroclimatic condition.

Studies on Screening of Onion (Allium cepa L.) Genotypes against Bolting Behaviour

In India, onion is grown during Kharif, late Kharif and Rabi season, though Rabi is the main crop. India is the second largest producer of onion in the world after China. The onion is grown as bulb crop, some inflorescence stalks are produced before formation of normal bulbs known as bolting, it is not a desirable because it stop the development of bulbs in bulbing crops. These bulbs become fibrous and light in weight. The study conducted at Nashik and Karnal during kharif, 2017, revealed that at Nashik, the highest gross yield (360.71 q/ha) and marketable yield (356.44 q/ha) were recorded in the check variety NHRDF Red-4 and found at par with all the advance lines except L-764, L-705, L-743, L-833 and L-872. Highest total soluble solids (12.07%) and dry matter (13.58%) were noted in check variety NHRDF Red-3, however at Karnal, the highest gross yield (198.36 q/ha) and marketable yield (183.44 q/ha) were recorded in advance line L-883 and found at par with advance lines L-863, L-882 and L-884 in respect of gross yield. Highest total soluble solids (15.01%) was recorded in the advance line L-881 and found at par with the advance lines L-653, L-682 and L-880. It is concluded from the study that the advance lines such as L-883 and NHRDF Red-4, which has highest yield can be utilized for higher yield. Regarding bolting behavior, no bolters were recorded in lines L-705, L-748, L-750, L-831, L-833, L-870, L-888, L-890, L-894 and check NHRDF Red-4, however, these lines can be utilized by onion breeder for developing good quality onion variety for different agroclimatic condition.

ANALISIS KOMPONEN HASIL VANILI ALOR PADA BEBERAPA AGROEKOLOGI DI NUSA TENGGARA TIMUR

<p>ABSTRAK<br />Tanaman vanili (Vanilla planifolia Andrews) dapat tumbuh pada<br />daerah beriklim kering, seperti di daerah Kabupaten Alor dengan<br />ketinggian tempat 0-1500 m dpl. Namun demikian, pertumbuhan dan<br />produksinya diduga akan bervariasi bergantung pada perbedaan kondisi<br />agroklimat. Tujuan penelitian ini adalah untuk menganalisis pertumbuhan<br />vegetatif, generatif, dan komponen hasil tanaman vanili lokal Alor di<br />daerah beriklim kering. Penelitian dilakukan di daerah beriklim kering,<br />Kabupaten Alor, Nusa Tenggara Timur, pada tiga lokasi dengan<br />ketinggian tempat 25-825 m dpl., jenis tanah Inceptisol, dan tipe iklim F<br />(Scmidht dan Ferguson), pada bulan Januari sampai Desember 2009.<br />Metode yang digunakan adalah observasi terhadap populasi tanaman vanili<br />yang ditanam pada tiga lingkungan tumbuh yang berbeda berdasarkan<br />ketinggian tempat dari permukaan laut: (1) agroklimat dataran rendah<br />(ketinggian 25 m dpl), (2) dataran medium (425 m dpl), dan (3) dataran<br />tinggi (825 m dpl). Peubah yang diamati meliputi pertumbuhan vegetatif,<br />generatif, dan komponen hasil. Hasil penelitian menunjukkan bahwa faktor<br />agroklimat berpengaruh nyata terhadap pertumbuhan dan komponen hasil<br />tanaman vanili. Pada ketinggian 825 m dpl, tanaman vanili menghasilkan<br />pertumbuhan generatif dan komponen hasil vanili lebih baik, namun<br />sebaliknya untuk pertumbuhan vegetatif. Kondisi iklim mikro, terutama<br />intensitas cahaya matahari, suhu udara, dan unsur hara tanah diduga<br />menjadi penyebab perbedaan tersebut.<br />Kata kunci: Vanilla planifolia Andrews, varietas lokal Alor, ketinggian<br />tempat, pertumbuhan, komponen hasil</p><p>ABSTRACT<br />Vanilla (Vanilla planifolia Andrews) plants can grow in dry<br />climates such in Alor Regency from altitude of 0-1500 m above sea level.<br />However, their growth and production may vary depending on the<br />difference in agroclimatic condition. The objective of the research was to<br />analyze the growth of vegetative, generative, and yield components of<br />Alor’s vanilla in dry climates. This research was conducted in the dry<br />climates, Alor Regency, East Nusa Tenggara, at those locations 25-825 m<br />above sea level (asl) altitude, in Inceptisol type of soil and F type of<br />climate (Scmidht and Ferguson), from January until December 2009. The<br />study was undertaken based on observation method on the vanilla<br />population grown in three different agroclimatic condition, with altitudes:<br />(1) 25 m asl; (2) 425 m asl, and (3) 825 m asl. Variables measured include<br />the growth of vegetative, generative, and yield components characters. The<br />research showed that at 825 m asl vanilla produces better for generative<br />and yield components, and vice versa for vegetative growth. Microclimate<br />conditions, soil nutrition, light intensity, and temperature, may be the<br />cause of these differences.<br />Key words: Vanilla planifolia Andrews, local variety of Alor, altitude,<br />growth, yield components</p>