The concept of Beeja Sphuta and Kshetra Sphuta is a very beautiful way of studying the fertility of a person. An astrologer can use these two factors to confirm infertility issues. The ancient text Phaladeepika describes these two factors and their calculation.
The word Beeja means seed and the word Kshetra means the field. This alludes to the fertility of the male seed and the womb that receives and grows the seed.
The Beeja Sphuta
In the case of a male nativity, if the total of the longitudes of the Sun, Venus and Jupiter denotes an odd sign and an odd Navamsa, it is indicative of the strong physical capacity of the male to produce children and in case one of the two (sign and Navamsa) be even, the result will be mixed. If both sign and Navamsa are in even sign, the physical capacity to produce children would be almost nil or very weak.
In the case of a female nativity add the longitudes of the Moon, Mars and Jupiter. If the result comes to an even sign and even Navamsa, the strength of fecundity in the female for producing issues is assured. If it is mixed i.e., even sign or even Navamsa or vice-versa, she will be able to produce children after great effort. If in the case of female nativity, the sum total denotes odd sign and odd Navamsa, her physical capacity to produce children will be almost nil or very weak.
The person should perform astrological remedies as called for. It is advisable to go to a fertility doctor in order to get the appropriate treatment.
Role of Tithi and Karan in judging progeny prospects
Subtract five times the longitude of the Sun from five times the longitude of the Moon. If the Tithi represented by the result be an auspicious one in the bright half of the lunar month, the native will definitely have progeny without much effort. But, if the resulting Tithi is one of the dark halves of the month, the effect will be taken as negative.
It is by close examination of the Tithi-whether it is auspicious or inauspicious in both the Pakshas-bright and dark-that one has to ascertain whether the native will have issues or not. During the Amavasya, a Chidra Tithi, the Vishti Karana or any of the Sthira Karanas, there will be no issue at all.
Notes:- The Chidra Tithis are a) Chaturthi b) Shasti c) Ashtami d) Navami e) Dwadashi and f) Chaturdashi. These days are generally avoided for all auspicious functions.
There are 11 karanas distributed over the 30 Tithis of the lunar month at the rate of 2 karanas for each Tithi. The four of these 1) Chatuspada, 2) Nagava, 3) Kimstunge and 4)Sakune are called Sthira Karanas and are so named as they permanently hold two over the four half Tithis commencing from the second half of Krishna Paksha Chaturdashi. The other seven viz., 1) Bava, 2) Balava, 3) Kailava, 4) Tathhila, 5) Garaya, 6) Vaniya and 7) Vishta or Bhadra are called Char or moveable karanas and occur in 8 cycles to preside over the remaining 56 half-to this of the lunar month beginning the latter half of Shukla paksha Prathama.
a) If the result happens to be one of the Chidra Tithis, the Vishti Karana or a Sthira Karana, the remedial measure is to worship Lord Krishna by the recitation of Purusha Sukta Mantras to ward off the barrenness threatening the family.
b) If the resultant Tithi comes out to be Shasti, the native ought to offer prayers to God Subramanya.
c) If it is Chaturthi the lord of the Serpents has to be appeased.
d) If it is a Navami, the recitation of Ramayana and listening to Ramayana is the remedy.
e) If it is Ashtami, the Sravana Vrata by fasting has to be observed.
f) If it is Chaturdashi the native should worship God Rudra (Shiva) by Rudraparayana.
g) If the Tithi be Dwadashi he should appease the gods by feeding the needy.
h) If it is Amavasya or Poornamasi the Manes (Pitra) have to be propitiated.
These measures are absolutely essential to be observed with greater care and attention when the Tithi happens to be one among the last five, namely after Krishna Paksha Dasami. Generally, in the dark half of the month to whichsoever of the three division, a Tithi may belong, worship ought to be resorted to: the particular deity to be propitiated being Nagaraja in the first division, namely 1-5 Tithi, Skanda in the second and Hari in the third or last five.