Invesitigation residual effects of elemental sulphur and ferrous suphlate on nutrients availability in soil, increas yield and quality of chryzantemum and gladiolus.

Calcareous soils for some reasons as lime, alkaline pH and nutrients availability decrease in soil among them phosphorus iron. zinc, manaanese and cupper.couid decrease the yieid of crops. In this respect for ameliorating soil f. litv condition the first researcli before present experiment (No. 1) was carried out in 1999. In order to investigate residua! effects of treatments from experiment No. I, other researcli design (No. 2) was conducted in 2000 throueh 2001. Including 1)ln P99"the research design under the.title of"sUidy the effect of elemental sulfur, ferrous sulphate and zinc sulphate on availGbiiity of nutrient absorption on gladiolus and carnation" with seven (reatments were included: elemental sulfur 200 g/m2 iron sulphatcO'.) 1500 g/m2, iron sulphate 750 g/m plus elemental sulfur 100 g/m-, sequewene 138 iron@ 4"/;ii2 control and.wo additional treatments zinc sulphate 4 and 8 g/m- respectively, was done In randomized complete, block design with four replication. Each plot w:,s 1.2 . 3 m. Results were shown. The @ron sulpbate(II) caused desirable e, is or, sladiolus specially and caused significantly decrease in pd and increase electrical conductivity. K, Zr,, Mn and Fe availability in soil. It also notably caused significantly promotion in spike emergence"and increased newer stem length, spike length, stem diameter, florets/spike, total weight a-id number ofcorm and ccrmk.t in area unit !7.6, 21.7, 38.2. 25.4, 34,7, 122.6 and 160.6 percent in contrast witrHhe.contro) respectively ;p 0.0-''). 2)1-1 2000 through @'00 i CrecenT experiment) for investieation residua', eflects of treatments froml999 in soil, reseird] dcsi"n under tlic life of"investiaaiion residual effects of elemental sulphur and ferrous sulphate on nutrients avanabilitv in soil, incs-easc vield and quality of chrysanthemum and gladiolus" was earned out on chrysanthemum and gladiolus as rotation in remained piots from 1999, with five treatments without reapplymg treatments until three years after applying ll'.eir, in soil, was can-ied ou-. in randomized complete block design with four replication . . Two vcars after soil application the iron sulphate (II), that residual effects on chrysanthemum cau-sed ..i"iiificantlv increase am&unt ofZn and Fe, decrease Mn available in soil and plant in compared with the corurol in. OO. It'also sisnincanlly increasc-d stem diameter and vase life of chrysanthemum ! 1.4 and 37.4 pcrceni in comparison with ihe contro! (p 0.05). .. . . Three vears after soil application iron ;,ulphate(ll), tliar residua! effects on gladiolus caused significantly increase amount of Fe-available in soil and N, Cu, Zn and Fc in plant compared with the control in 2001. ll also si"nificantlv increased s;em length of flower, number of leaves in plant, stem diameter, chlorophyll index , wet and drv weight ofolant. and number ofcoi-m and cori-i-iiet of gladiolus in area unit 13.3, 33.1. 30,2, 79.8, 60.7 S4 6 1'16 8"and 82.5 perccr,: in conc-asi wi'h the control ( p 0.05). Generally, during three years from soil application treatments, the iron sulphate (ii) and after iliat the eicmer.iiil sulphur plus iron sulpha; (llj notably had preference over control and oilier treatments. Key words; Chrysanthemum, Ferrous sulphalc, Gladiolus, Iron sequestrene. Residual effects. Sulphur.