Browsing by Author "BHUTIA, PEMPA LAMU"
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ThesisItem Open Access STANDARDIZATION OF FERTILIZER DOSES FOR PEA VARIETIES GROWN UNDER PEACH BASED AGROFORESTRY SYSTEM(2013) BHUTIA, PEMPA LAMU; THAKUR, C.L.ABSTRACT The present investigations entitled “Standardization of fertilizer doses for pea varieties grown under peach based agroforestry system” was carried out at the experimental field of Department of Silviculture & Agroforestry, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H P) during 2012-2013. The study was undertaken with the two objectives (a) to study the effect of different doses of inorganic fertilizers and Rhizobium inoculation on growth and yield of pea varieties and physiochemical properties of soil. (b) to identify the suitable pea variety to be grown under peach based agroforestry system. The experiment was laid out in randomizes block design (factorial) comprising of peach var. nectarina planted at a distance of 9m x 4m and open field condition, under which three varieties of pea (Solan Nirog, Azad P 1 and PB 89) were grown with five doses of inorganic fertilizers + Rhizobium inoculated seeds (RIS) viz., T1 (100% recommended dose of NPK + RIS), T2 (80% NPK + RIS), T3 (60% NPK + RIS), T4 (40% NPK + RIS) and T5 (control). The plot size was 4m x 2m and spacing of 60 cm x 7.5 cm was maintained for pea crop. The observation were recorded on growth and yield parameters of pea and soil chemical properties. The seeds were sown in 1st December 2012. All the growth and yield attributes of pea were significantly influenced by different doses of inorganic fertilizers + RIS except node number bearing first flower. Treatment T1 showed best results in most of the growth and yield attributes of pea crop viz., plant height (cm), number of pods plant-1, number of grains pod-1, pod length (cm), pod breadth (cm), 100 grain weight (g), shelling percentage (%), total biomasss production (g) and number of nodules per plant. There were no effect of planting conditions with regard to all the growth and yield attributes of pea as well as chemical properties of soil. Various soil chemical parameters viz., EC, OC, available N, available P showed maximum value in treatment T1(100% RD NPK + RIS). However, available K was reported maximum in treatments T4 (40% NP, 100% K + RIS). Variety PB 89 exhibited maximum value in most of the growth and yield attributes of pea except plant height, node number bearing first flower and shelling percentage. From the present investigation, it can be concluded that pea variety PB 89 can be successfully grown under peach based agroforestry system without much reduction in yield as compared to sole cropping and for obtaining maximum yield, seed should be inoculated with Rhizobium along with application of 100% RD NPK. This diversified practice can be a viable option for boosting the economy of farming community.ThesisItem Open Access VARIATIONS IN PHYSIOGNOMY AND PLANT ASSOCIATIONS OF DIFFERENT LAND USES ALONG ALTITUDINAL GRADIENT IN SOLAN DISTRICT (HP)(UHF,NAUNI, 2018-04-28) BHUTIA, PEMPA LAMU; GUPTA, B.ABSTRACT The present investigation was carried out in Solan district (HP), located between latitude 30°40’ to 31°21’ N and longitude 76.35’ to 77°15’ E covering an area of approximately 1,936 sq km. The district was divided into five elevation zones viz., E1 (<850m), E2 (851-1150m), E3 (1151-1450m), E4 (1451-1750m) and E5 (>1751m). At each elevation, two land uses viz., Miscellaneous and Grasslands were studied for their floristic composition, phytosociology, biomass, carbon stock and soil properties. In miscellaneous land use two types of agroforestry systems were identified a) Agriculture based agroforestry systems viz., agrisilviculture (AS), agrihorticulture (AH), agrisilvihorticulture (ASH), agrihortisilviculture (AHS), and b) Silvipasture systems viz., chir pine silvipasture (SPCP), mixed-trees silvipasture (SPM) and ban oak silvipasture (SPBO). In the former, wheat, mustard, pea and garlic were the main rabi crops, whereas maize, tomato, capsicum, french bean were the main cereal crops in kharif season. Prominent trees in agroforestry systems were: G. optiva, C. australis, F. palmata, B. variegata, M. azadirachta, M. alba and T. ciliata whereas, pear, apricot, pomegranate, lemon, walnut, peach, apple and plum were the major fruit trees in these systems. In silvipasture systems, 121 plant genera with 136 plant species were recorded, whereas in grassland 86 plant genera with 97 plant species were noticed. In chir pine and mixed-trees silvipastures, density (tillers/m2) of herbage vegetation was highest at elevation E1 (712.78, and 717.50, respectively) whereas, in ban oak silvipasture and grasslands it was highest at elevations E3 (537.22) and E2 (947.28), respectively. The highest density of shrubs (plants/m2) in chir pine and mixed-trees silvipastures was recorded at elevation E2 (2583.33 and 3015.00, respectively) whereas, in ban oak silvipasture and grasslands it was highest at elevations E3 (2633.33) and E1 (2411.11), respectively. The aboveground biomass in agriculture based agroforestry systems decreased in the order: ASH (55.29 t ha-1) > AHS (53.54 t ha-1) > AS (44.04 t ha-1) > AH (41.67 t ha- 1). Similarly, belowground and total biomass in them was highest in ASH with their respective values as 20.19 and 75.49 t ha-1 followed by AHS (19.52 and 73.06 t ha-1), AS (16.56 and 60.60 t ha-1) and AH (14.72 and 56.39 t ha-1). In silvipasture systems aboveground biomass was maximum in SPBO (73.33 t ha-1) that decreased to 70.77 t ha-1 in SPCP and 65.02 t ha-1 in SPM, whereas, in grasslands it was 4.29 t ha-1. Maximum belowground biomass was recorded in SPM (22.20 t ha-1) which decreased in the order: SPBO (21.09 t ha-1) > SPCP (19.52 t ha-1), whereas total biomass was highest in SPBO (94.42 t ha-1) followed by SPCP (90.29 t ha-1) and SPM (87.21 t ha-1). In grasslands, belowground and total biomass was recorded as 2.20 t ha-1 and 6.49 t ha-1, respectively. Aboveground biomass carbon in agriculture based agroforestry systems was highest (24.88 t C ha-1) in ASH followed by AHS (24.09 t C ha-1), AS (19.82 t C ha-1) and AH (18.75 t C ha-1). In silvipasture systems it was maximum (33.00 t C ha-1) in SPBO followed by SPCP (31.85 t C ha-1) and SPM (29.25 t C ha-1), and whereas it was 1.93 t C ha-1 in grasslands. Belowground and total carbon stock in vegetation of agriculture based agroforestry systems and silvipasture systems followed the trend observed in belowground biomass and total biomass. In grasslands belowground carbon stock was 0.99 t C ha-1 and total carbon stock was 2.92 t C ha-1. There was increase in carbon stock with increase in elevation in agroforestry systems and silvipasture systems, whereas it was vice-versa in grasslands. In agriculture based agroforestry systems maximum soil carbon density (59.03 t C ha-1) was recorded in ASH that decreased to 58.82 t C ha-1 in AS, 58.32 t C ha-1 in AHS and 57.41 t C ha-1 in AH. In silvipasture systems highest soil carbon density (74.02 t C ha-1) was recorded in SPBO followed by SPM as 73.16 t C ha- 1 and SPCP as 69.76 t C ha-1. In grasslands soil carbon density was 68.64 t C ha-1. Soil properties viz., pH, EC, MC, BD, SOC and microbial population (bacteria, fungi, actinomycetes) differed significantly with systems and elevations.